Application.WindowActivate Event (PowerPoint)
Occurs when the application window or any document window is activated.
For information about using events with the Application object, see How to: Use Events with the Application Object.
If your Visual Studio solution includes the Microsoft.Office.Interop.PowerPoint reference, this event maps to the following types:
Microsoft.Office.Interop.PowerPoint.EApplication_WindowActivateEventHandler (the WindowActivate delegate.)
Microsoft.Office.Interop.PowerPoint.EApplication_Event.WindowActivate (the WindowActivate event.)